TriangleTube Prestige Excellence Part 1 - Manual (Page 17)

Removal of an Existing Boiler from a
Common Vent System
When an existing boiler is removed from a
common venting system, the common vent-
ing system is likely to be too large for proper
venting of the remaining appliances. At the
time of removal of an existing boiler, the fol-
lowing steps shall be followed with each
appliance remaining connected to the com-
mon venting system placed in operation,
while the other appliances remaining con-
nected to the common venting system are not
in operation.
1. Seal any unused openings in the common
venting system.
2. Visually inspect the venting system for
proper size and horizontal pitch and deter-
mine there is no blockage or restriction,
leakage, corrosion and other deficiencies
which could cause an unsafe condition.
3. Insofar as is practical, close all building
doors and windows and all doors between
the space in which the appliances remain-
ing connected to the common venting sys-
tem are located and other spaces of the
building. Turn on clothes dryers and any
appliance not connected to the common
venting system. Turn on any exhaust fans,
such as range hoods and bathroom
exhausts, so they will operate at maximum
speed. Do not operate a summer exhaust
fan. Close fireplace dampers.
4. Place in operation the appliance being
inspected. Follow the lighting instructions.
Adjust thermostat so appliance will oper-
ate continuously.
5. Test for spillage at the draft hood relied
opening after 5 minutes of main burner
operation. Use the flame of a match or can-
dle, or smoke from a cigarette, cigar or pipe.
6. After it has been determined that each
appliance remaining connected to the
common venting system properly vents
when tested as outlined above, return
doors, windows, exhaust fans, fireplace
dampers, and any other gas-burning appli-
ance to their previous condition of use.
7. Any improper operation of the common
venting system should be corrected so the
installation conforms with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54
and/or CAN/CGA B149, Installation
codes. When resizing any portion of the
common venting system, the common
venting system should be resized to
approach the minimum size as determined
using the appropriate tables in Part II of
the National Fuel Gas Code ANSI
Z223.1/NFPA 54 and/or CAN/CGA B149,
Installation codes.
Do not install the PRESTIGE Excellence
into a common vent with other gas or oil
appliances. This may cause flue gas
spillage or appliance malfunction, result-
ing in possible severe personal injury,
death or substantial property damage.
BEST PRACTICE
DANGER
Combustion Air and Venting
10